4m+7m=(4+7)m对吗?
m-2m-3m+4m-5m-6m+7m.2004m=?
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m5m+7m+.2009m)-(2m+4m+6m.2008m)
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
(m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由!
m-2m-3m+4m-5m-6m+7m-8m-9m+.+2002m-2003m-2004m
(m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=?
(m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)=
已知m>4,化简:|m-4|+|7-2m|+|m^2-2m+1|-|m^2-2m-3|
4^m+3×8^m÷2^4m+7=16,求m的值
化简:4/m-3-2m-6/m的二次方-6+9 m=7
(3+m)(3-m)+m(m-4)-7 其中m等于四分之一